From roughly 2 weeks after HA! and The Comedy Channel merged to form CTV: The Comedy Network. This is the first airing of MST3K on the new channel.
Aired April 19, 1991 at 10am.
Check back here roughly every week-ish for more broadcast versions of MST3K episodes.
FYI, I'm always on the look-out for taped episodes with their commercials intact. Preferably March 1991 and earlier or February 93-October 93. I'll even pay for the things. Interested? Drop me a line!